<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<input type="button" value="点击" onclick="f2('mcl',18)">




<script>
    //无参无返回值
  function f1() {
      console.log("f1")
  }
  //调用方法
  f1();
  //2 有参无返回值
 function f2(name,age) {
    console.log(name+":"+age);
 }
 f2("mcl",18);
// 3.无参有返回值
  function f3() {
      return "这是返回值";
  }
  let info =f3();
  console.log(info);
  //4.有参有返回值
    function f4(x,y) {
        return x*y;
    }
    let result =f4(8,9);
    console.log(result);
//第二种声明的方式
    let f5 =function (name,age) {
        console.log(name+":"+age);
    }
    f5("lll",18);
//第三种声明的方式
    let f6 =new Function("name","age","console.log(name+';'+age)");
    f6("小八",18);


</script>
</body>
</html>